/* **********************************************************
 * Copyright (c) 2023 Google, Inc.  All rights reserved.
 * **********************************************************/

/*
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * * Neither the name of Google, Inc. nor the names of its contributors may be
 *   used to endorse or promote products derived from this software without
 *   specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL VMWARE, INC. OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 */

#include <fstream>
#include "utils.h"
#include "external_config_file.h"

namespace dynamorio {
namespace drmemtrace {

external_tool_config_file_t::external_tool_config_file_t(const std::string &root,
                                                         const std::string &filename)
{
    std::ifstream stream(filename);
    if (stream.good()) {
        std::string creator_bin_tag("CREATOR_BIN");
#ifdef X64
        creator_bin_tag.append("64=");
#else
        creator_bin_tag.append("32=");
#endif
        std::string line;
        while (std::getline(stream, line)) {
            auto pos = line.find("TOOL_NAME=");
            if (pos != std::string::npos) {
                tool_name_ = line.substr(pos + 10);
            }

            pos = line.find(creator_bin_tag);
            if (pos != std::string::npos) {
                auto creator_lib_path = line.substr(pos + creator_bin_tag.length());
                creator_path_ += root + DIRSEP + creator_lib_path;
            }
        }

        valid_ = (!tool_name_.empty() && !creator_path_.empty());
    }
}

} // namespace drmemtrace
} // namespace dynamorio
